# Using dispatcher utter\_template ended with exception
**URL:** https://forum.rasa.com/t/using-dispatcher-utter-template-ended-with-exception/707
**Category:** Rasa Open Source
**Created:** [August 27, 2018, 6:18pm UTC](https://forum.rasa.com/t/using-dispatcher-utter-template-ended-with-exception/707 "2018-08-27T18:18:03Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@leonardoaii71](https://forum.rasa.com/u/leonardoaii71)
#### Post date: [August 27, 2018, 6:18pm UTC](https://forum.rasa.com/t/using-dispatcher-utter-template-ended-with-exception/707/1 "2018-08-27T18:18:03Z")
Hello everyone, I’m having an exception while executing dispatcher.utter\_template(“utter\_ack\_eventdate”, tracker) from a custom action. This is what I get:
```auto
File "/rasa_core/trackers.py", line 305, in update
raise ValueError("event to log must be an instance "
ValueError: event to log must be an instance of a subclass of Event.
```
This is my utter template in the domain file:
utter\_ack\_eventdate: - text: “The event {event} will be on {date}”
This is my action method:
```
def run(self, dispatcher, tracker, domain):
match = tracker.get_slot("date")
matches = tracker.get_slot("matching_events")
if match:
dispatcher.utter_template("utter_ack_eventdate", tracker)
elif matches:
suggestions = [{'title': event, 'payload': "/query_event{\"event\": \"%s\""} for event in matches]
dispatcher.utter_button_message(" ",suggestions)
return []
```
Any idea?
---
### Author:  [@akelad](https://forum.rasa.com/u/akelad)
#### Post date: [August 29, 2018, 2:36pm UTC](https://forum.rasa.com/t/using-dispatcher-utter-template-ended-with-exception/707/2 "2018-08-29T14:36:23Z")
Can you post the full error trace?
---
### Author:  [@leonardoaii71](https://forum.rasa.com/u/leonardoaii71)
#### Post date: [August 29, 2018, 7:35pm UTC](https://forum.rasa.com/t/using-dispatcher-utter-template-ended-with-exception/707/3 "2018-08-29T19:35:24Z")
Here it is:
when is the enrollment?
> C:\Users\Leonardo\Anaconda3\envs\BotProject\lib\site-packages\sklearn\preprocessing\label.py:151: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
> ```
> if diff:
> 2018-08-29 15:16:20 ERROR rasa_core.processor - Encountered an exception while running action 'action_suggest'. Bot will continue, but the actions events are lost. Make sure to fix the exception in your custom code.
> 2018-08-29 15:16:20 ERROR rasa_core.processor - event to log must be an instance of a subclass of Event.
> Traceback (most recent call last):
> File "C:\Users\Leonardo\Anaconda3\envs\BotProject\lib\site-packages\rasa_core\processor.py", line 302, in _run_action
> events = action.run(dispatcher, tracker, self.domain)
> File "C:\Users\Leonardo\Documents\GitHub\starter-pack\actions.py", line 69, in run
> dispatcher.utter_template("utter_suggestions", tracker)
> File "C:\Users\Leonardo\Anaconda3\envs\BotProject\lib\site-packages\rasa_core\dispatcher.py", line 122, in utter_template
> message = self.retrieve_template(template, filled_slots, **kwargs)
> File "C:\Users\Leonardo\Anaconda3\envs\BotProject\lib\site-packages\rasa_core\dispatcher.py", line 157, in retrieve_template
> return self._fill_template_text(r, filled_slots, **kwargs)
> File "C:\Users\Leonardo\Anaconda3\envs\BotProject\lib\site-packages\rasa_core\dispatcher.py", line 136, in _fill_template_text
> template_vars = self._template_variables(filled_slots, kwargs)
> File "C:\Users\Leonardo\Anaconda3\envs\BotProject\lib\site-packages\rasa_core\dispatcher.py", line 132, in _template_variables
> template_vars.update(kwargs.items())
> File "C:\Users\Leonardo\Anaconda3\envs\BotProject\lib\site-packages\rasa_core\trackers.py", line 305, in update
> raise ValueError("event to log must be an instance "
> ValueError: event to log must be an instance of a subclass of Event.
>
> ```
I edited my custom action to fill the template variables but it is the same even with no-variables templates.
```
def run(self, dispatcher, tracker, domain):
match = tracker.get_slot("date")
matches = tracker.get_slot("matching_events")
if match:
dispatcher.utter_template("utter_ack_eventdate", tracker, event=tracker.get_slot('event'),
date=match)
elif matches:
dispatcher.utter_template("utter_suggestions", tracker)
suggestions = [{'title': event, 'payload': "/query_event{\"event\": \"%s\""} for event in matches]
dispatcher.utter_button_message("Quizás quisiste decir: ", suggestions)
return []
```
---
### Author:  [@akelad](https://forum.rasa.com/u/akelad)
#### Post date: [August 31, 2018, 2:47pm UTC](https://forum.rasa.com/t/using-dispatcher-utter-template-ended-with-exception/707/4 "2018-08-31T14:47:46Z")
Can you post your domain file please? Also which Core version are you using?
---
### Author:  [@leonardoaii71](https://forum.rasa.com/u/leonardoaii71)
#### Post date: [August 31, 2018, 3:35pm UTC](https://forum.rasa.com/t/using-dispatcher-utter-template-ended-with-exception/707/5 "2018-08-31T15:35:47Z")
My rasa core version is 0.9.7
intents:
- greet
- thank
- bye
- deny
- affirm
- informar
- pedir\_info
- ofrecer\_info
- query\_date
- query\_event
- query\_process
- sorry
entities:
- event
- date
slots:
event:
```
type: unfeaturized
```
date:
```
type: unfeaturized
```
matching\_events:
```
type: list
```
username:
```
type: unfeaturized
initial_value: "human"
```
templates:
utter\_greet:
- text: “Hello {username}! I’m the register’s Bot, Tell me something you want to know.”
utter\_thank: - “You’re Welcome!”
utter\_bye:
- text: “Adios {username}.”
- text: “¡Bye-bye {username}!”
- text: “¡Hasta luego {username}!”
- text: “Hasta pronto, gracias por tu visita {username}!”
utter\_sorry:
- text: “Lo siento pero por el momento no puedo ayudarte.”
utter\_date:
- “You have one incoming event: Prematricula”
utter\_did\_that\_help:
- text: “¿Te sirvió de ayuda mi respuesta?”
utter\_happy:
- text: “Great!”
- text: “Me alegra escuchar eso!”
utter\_goodbye:
- text: “Bye”
- text: “Hasta luego!”
- text: “Adios!”
utter\_ack\_eventdate:
- text: “The {event} will be on {date}”
utter\_ask\_username:
- text: “¿Hola, para conocernos mejor, Cuál es tu nombre?”
utter\_another\_question:
- text: “Tienes otra pregunta {username}?”
- text: “Necesitas saber algo mas {username}?”
utter\_suggestions:
- text: “Creo que no entendí bien, quisiste decir:”
- text: “Por favor podrías ser mas especifico? intenta con:”
utter\_default:
- text: “Lo siento, no entendí tu pregunta, intenta con otra”
actions:
- utter\_greet
- utter\_thank
- utter\_bye
- utter\_sorry
- utter\_date
- utter\_did\_that\_help
- utter\_happy
- utter\_ack\_eventdate
- utter\_goodbye
- utter\_another\_question
- utter\_ask\_username
- utter\_default
- utter\_suggestions
- actions.ActionShowEventResults
- actions.ActionlookforEvent
---
### Author:  [@akelad](https://forum.rasa.com/u/akelad)
#### Post date: [September 4, 2018, 9:19am UTC](https://forum.rasa.com/t/using-dispatcher-utter-template-ended-with-exception/707/6 "2018-09-04T09:19:15Z")
Could you upgrade to a newer version, e.g. 0.10.4 or 0.11.2 to see if this issue persists?
---
### Author:  [@leonardoaii71](https://forum.rasa.com/u/leonardoaii71)
#### Post date: [September 8, 2018, 4:22pm UTC](https://forum.rasa.com/t/using-dispatcher-utter-template-ended-with-exception/707/7 "2018-09-08T16:22:45Z")
I have upgraded to 0.11 and this resolved the issue. The utter\_template() I was using is the one from the 0.10 version which is required to have the tracker as a second argument.
Thank you for helping!